Sewing machine



FIG. 1 is a front, top and right side perspective view of a sewing machine showing our new design, wherein the structure shown in broken lines is included for illustrative purposes only and forms no part of the claimed design.

FIG. 2 is a front elevational view thereof, wherein the structure shown in broken lines is included for illustrative purposes only and forms no part of the claimed design.

FIG. 3 is a rear elevational view thereof, wherein the broken line structure is included for illustrative purposes only and forms no part of the claimed design and the area bordered in dot-dash lines contiguous to full lines is included to define an area of the article which is not part of the claimed design.

FIG. 4 is a top view thereof, wherein the structure shown in broken lines is included for illustrative purposes only and forms no part of the claimed design.

FIG. 5 is a bottom view thereof, wherein the structure shown in broken lines is included for illustrative purposes only and forms no part of the claimed design.

FIG. 6 is a left side view thereof, wherein the broken line structure is included for illustrative purposes only and forms no part of the claimed design.

FIG. 7 is a right side view thereof; and,

FIG. 8 is another left side view thereof. 

The ornamental design for a sewing machine, as shown and described. 